Electric Cooling Fan
WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Refer to Electric Coolant Fan Caution
.
CAUTION:
Refer to Damaged Fan Blade Caution
.
The cooling fans are mounted behind the radiator in the engine compartment. The electric cooling fans increase the flow of air across the radiator fins and across the condenser on A/C-equipped vehicles. This helps to speed cooling when the vehicle is at idle or moving at low speeds.
The fan size is 366 mm (14.4 in) in diameter with 5 blades to aid the airflow through the radiator and the condenser. A non-A/C model is 300 mm (11.8 in). An electric motor attached to the radiator support drives the fan.
A/C OFF or Non-A/C Model
- The cooling fans are actuated by the engine control module (ECM) using a low-speed cooling fan relay and a high-speed cooling fan relay. On A/C-equipped vehicles, a series/parallel cooling fan relay is also used.
- The ECM will turn the cooling fans ON at low speed when the coolant temperature reaches 93°C (199°F) and high speed at 97°C (207°F).
- The ECM will change the cooling fans from high speed to low speed at 94°C (201°F) and turn the cooling fans OFF at 90°C (194°F).
A/C ON
- The ECM will turn the cooling fans ON at low speed when the A/C system is ON. The ECM will change to high speed when the coolant temperature reaches 97°C (207°F) or high-side A/C pressure reaches 1 882 kPa (273 psi).
- The cooling fans will return to low speed when the coolant temperature reaches 94°C (201°F) or high-side A/C pressure reaches 1 448 kPa (210 psi).